linux-kernel - Re: [(RT RFC) PATCH v2 4/9] optimize rt lock wakeup

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Date:	Mon, 3 Mar 2008 10:37:29 -0500 (EST)
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Gregory Haskins <ghaskins@...ell.com>
cc:	mingo@...e.hu, a.p.zijlstra@...llo.nl, tglx@...utronix.de,
	linux-rt-users@...r.kernel.org, linux-kernel@...r.kernel.org,
	bill.huey@...il.com, kevin@...man.org, cminyard@...sta.com,
	dsingleton@...sta.com, dwalker@...sta.com, npiggin@...e.de,
	dsaxena@...xity.net, ak@...e.de, pavel@....cz, acme@...hat.com,
	gregkh@...e.de, sdietrich@...ell.com, pmorreale@...ell.com,
	mkohari@...ell.com
Subject: Re: [(RT RFC) PATCH v2 4/9] optimize rt lock wakeup


On Mon, 25 Feb 2008, Gregory Haskins wrote:

> It is redundant to wake the grantee task if it is already running

This is only expensive for your adaptive mutex algorithm, not what is in
there today. It belongs _after_ the adaptive mutex patch in the series.

-- Steve
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